▸ Decision Intelligence Matrix
Grammarly Premium vs Typeahead
Side-by-side objective engineering comparison, tradeoffs, and free plan limitations.
Grammarly Premium
4.7
▸ Decision Intelligence Matrix
Side-by-side objective engineering comparison, tradeoffs, and free plan limitations.
Swap products to recompile the verdict, or add a third tool for a side-by-side stack.
▸ Decision summary
Pick Grammarly Premium if you write across many devices and platforms and want tone and plagiarism checking built in. Pick Typeahead if you live on a Mac, want your text to stay off someone else's server, and would rather have your sentences finished for you than corrected after the fact.
AI-powered writing assistant that checks grammar, style, tone, and plagiarism across every platform. The free tier now includes 100 AI prompts/month; Premium adds full tone and plagiarism detection.
Typeahead is a native macOS app that adds AI autocomplete to every text field on your Mac, from Slack to Mail to your terminal. It runs entirely on-device with a local model, so nothing you type is sent to a server, and it's sold as a one-time $79 purchase rather than a subscription.
| Metric | Winner | Vetted Recommendation Analysis |
|---|---|---|
Data Privacy | Typeahead | Typeahead processes everything locally on your Mac with no account and no telemetry. Grammarly sends your text to its servers to generate suggestions. |
| Limit Criteria | Grammarly Premium | Typeahead |
|---|---|---|
| Free plan | Grammar, spelling, and punctuation checks, plus 100 AI prompts/month | No free plan, one-time $79 purchase (refund available if unsatisfied) |
| Paid tier cost | $12/mo billed annually ($144/yr) or $30/mo month to month | $79 once, no subscription or renewal |
| Platform reach | Browser, desktop, mobile, and Office/Google Docs integrations | macOS only (Apple Silicon or Intel, macOS 14+) |
▸ FAQ
▸ Other head-to-head matchups
| Grammarly Premium | Typeahead | |
|---|---|---|
| Free tier | Yes, basic checks + 100 AI prompts/mo | No, $79 one-time only |
| Where it runs | Cloud, cross-platform | Local, macOS only |
| What it does | Corrects grammar, tone, plagiarism | Predicts and autocompletes sentences |
| Best for | Writers on many devices and platforms | Mac users who want offline, private autocomplete |
Need your writing checked and polished everywhere you type? Go Grammarly. Want your Mac to finish your sentences for you, offline and private? Go Typeahead.
| Typeahead |
Typeahead is a single $79 payment with no renewal. Grammarly Pro keeps billing you every month or year for as long as you use it. |
Correction Depth | Grammarly Premium | Grammarly checks grammar, tone, clarity, and originality after you write. Typeahead doesn't correct anything, it only predicts what comes next. |
Platform Coverage | Grammarly Premium | Grammarly runs on Windows, Mac, mobile, and inside Office and Google Docs. Typeahead only exists on macOS. |
Free Tier Usability | Grammarly Premium | Grammarly's free plan is genuinely useful for basic grammar and spelling checks with no cost. Typeahead has no free tier at all, just a one-time purchase. |
Grammarly: works everywhere, from Gmail to Google Docs to Slack, but your writing is processed on Grammarly's servers, not your device.
Grammarly: the free tier checks grammar and spelling for nothing, but tone detection, plagiarism checks, and full rewrites are locked behind the $12 to $30 a month Pro plan.
Typeahead: runs entirely offline on your Mac with no account and no telemetry, but it's a one-time $79 purchase with no ongoing grammar or tone checking.
Typeahead: Mac only, so Windows and mobile writers get nothing, while Grammarly covers desktop, web, and phone.